CLI binary download without include_binary; parallelize HTTP downloads

[n0nick]

This PR addresses several inefficiencies in binary data download logic:

1. Remove IncludeBinary parameter usage: Always download binary data via HTTP using the URI from metadata, since IncludeBinary is considered harmful.
2. Eliminate redundant metadata fetching:
   • Filter-based downloads previously fetched metadata twice (once in getMatchingBinaryIDs, discarded, then again in downloadBinary).
   • Dataset downloads fetched metadata three times (once for IDs, once in downloadBinary, once in binaryDataToJSONLines).
   • Now all paths collect metadata once and reuse it.
3. Parallelize downloads for ID-based path: Previously sequential downloads when multiple IDs were provided; now uses worker pool pattern similar to
   filter-based downloads.
4. Unify download logic: Both filter-based and ID-based paths now use the same parallel download implementation via downloadBinaryFilesInParallel.

Key changes:

• Created downloadSingleBinaryFile: Extracts single-file download logic (metadata JSON writing, HTTP download with retry, file writing, gzip handling).
• Created downloadBinaryFilesInParallel: Reusable parallel download function using worker pool pattern for both download paths.
• Replaced getMatchingBinaryIDs with getMatchingBinaryMetadata: Returns full BinaryData objects with metadata (including URIs) instead of just IDs.
• Refactored binaryData (filter-based): Collects all metadata once, then downloads in parallel.
• Refactored dataExportBinaryIDsAction (ID-based): Collects all metadata once, then downloads in parallel.
• Refactored downloadDataset: Eliminates triple metadata fetching, downloads files and writes JSON lines in parallel.
• Removed downloadBinary function: No longer needed after refactor.

Benefits:

• Removed IncludeBinary usage to prefer the HTTP file server download.
• Overall reduction in metadata API calls across download actions.
• Significant performance improvement for ID-based downloads (now parallelized).
• Consistent behavior across all download paths.